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    LOW-CATALYST CARBODIIMIDE GROUPS AND/OR ISOCYANATE MIXTURES COMPRISING URETONIMINE GROUPS
    94.
    发明申请
    LOW-CATALYST CARBODIIMIDE GROUPS AND/OR ISOCYANATE MIXTURES COMPRISING URETONIMINE GROUPS 审中-公开
    低催化性碳酸酯组和/或异氰酸酯混合物，包含尿素组

    公开(公告)号：US20120065424A1

    公开(公告)日：2012-03-15

    申请号：US13322165

    申请日：2010-04-21

    申请人： Emmanouil Spyrou ,  Evelyn Albrecht ,  Annegret Lilienthal ,  Iris Brueckner ,  Andrea Voecker

    发明人： Emmanouil Spyrou ,  Evelyn Albrecht ,  Annegret Lilienthal ,  Iris Brueckner ,  Andrea Voecker

    IPC分类号： C07C265/00

    CPC分类号： C08G18/025 ,  C08G18/755 ,  C08K5/49

    摘要： A low-catalyst-content isocyanate mixture containing at least one of a carbodiimide group and a uretonimine groups, obtained by: reacting at least one monomeric diisocyanate (A) in the presence of phosphorus-containing catalyst (B), to obtain a reaction mixture comprising carbodiimide, where the reaction does not take place to complete conversion of the diisocyanate (A) and 1-80% by weight of the diisocyanate (A) employed remains in the reaction mixture as excess diisocyanate; and subsequently simultaneously removing, by distillation, a fraction of the excess of diisocyanate and the catalyst (B), to obtain the isocyanate mixture and a distillate, where the isocyanate mixture has a monomeric diisocyanate (A) content of 0.5%-20% by weight, based on the monomeric diisocyanate (A) employed, and a catalyst (B) content of 0% to 20% by weight, based on the catalyst (B) employed. In addition, a process for preparing a low-catalyst-content isocyanate mixture.

    摘要翻译： 通过使至少一种单体二异氰酸酯（A）在含磷催化剂（B）的存在下反应，得到含有碳二亚胺基和脲酮亚胺基中的至少一种的低催化剂含量异氰酸酯混合物，得到反应混合物 其中不进行反应以完成二异氰酸酯（A）的转化和1-80重量％的所用二异氰酸酯（A）的碳二亚胺残留在反应混合物中作为过量二异氰酸酯; 然后通过蒸馏同时除去过量二异氰酸酯和催化剂（B）的一部分，得到异氰酸酯混合物和馏出物，其中异氰酸酯混合物的单体二异氰酸酯（A）含量为0.5％-20％ 重量，基于所使用的单体二异氰酸酯（A）和基于所用催化剂（B）的催化剂（B）含量为0-20重量％。 另外，制备低催化剂含量的异氰酸酯混合物的方法。